1.58 lb ( 3.50 kg)
The average amount of pounds a Chevy Caprice would take is 3 to 4 pounds. Freon is difficult to obtain and you have to know what you are doing to charge a car.
r-12
Was built for R12, should be converted to R134a
2 lbs
Buy a kit a t Wal-Mart or auto parts comes with instructions
It probably had R12 from the factory, this is now banned.There are "Drop in" replacements available.
It should tell you on the air conditioning unit but it's more than likely R12. I have an '89 Caprice and it takes R12.
On my caprice I know because it was a police car it used R-12 and it can't be bought in stores. Only mechanics are authorized to carry it!
r12
Fittings for 134 freon
R134
There is only one Freon, and that is R12. R12 Freon came installed in your 1991 Chevy. It may or may not have been changed over to R134 Refrigerant. If not change it over, as the cost of R12 is unbelievably high an is no longer in production.